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User Xiepan
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1 Answer

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The cross-section is parallel to DCGH, so the cross-section of the cut has the same dimensions as DCGH (the nearest vertical face).

Since it is a rectangular prism, we have
HG=DC=EF=12"
DH=CG=BF=22"
Therefore the cross section is 22" x 12".
User Fuffy
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